Teradyne, Inc.
MX ˙ BMV ˙ US8807701029
SecurityMX:TER / Teradyne, Inc.
InstitutionBlair William & Co/il
Latest Disclosed Ownership13,484 shares
Latest Disclosed Value $ 3,997,391
Blair William & Co/il reports 1.31% increase in ownership of TER / Teradyne, Inc.

On May 8, 2026 - Blair William & Co/il filed a 13F-HR form disclosing ownership of 13,484 shares of Teradyne, Inc. (MX:TER) valued at $3,997,391 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 13,309 shares of Teradyne, Inc.. This represents a change in shares of 1.31% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-08 2026-03-31 13F TERADYNE COM 880770102 13,484 175 1.31 3,997 55.16 0.0115
2026-02-17 2025-12-31 13F TERADYNE COM 880770102 13,309 -28 -0.21 2,576 40.38 0.0053
2025-11-12 2025-09-30 13F TERADYNE COM 880770102 13,337 708 5.61 1,836 61.67 0.0049
2025-07-24 2025-06-30 13F TERADYNE COM 880770102 12,629 -194 -1.51 1,136 7.18 0.0032
2025-05-09 2025-03-31 13F TERADYNE COM 880770102 12,823 -137 -1.06 1,059 -35.07 0.0032
2025-02-12 2024-12-31 13F TERADYNE COM 880770102 12,960 -255 -1.93 1,632 -7.80 0.0047
2024-11-12 2024-09-30 13F TERADYNE COM 880770102 13,215 -26 -0.20 1,770 -9.88 0.0052
2024-08-12 2024-06-30 13F TERADYNE COM 880770102 13,241 -1,763 -11.75 1,964 16.02 0.0061
2024-05-09 2024-03-31 13F TERADYNE COM 880770102 15,004 83 0.56 1,693 4.51 0.0053
2024-02-12 2023-12-31 13F TERADYNE COM 880770102 14,921 254 1.73 1,619 9.91 0.0055
2023-11-09 2023-09-30 13F TERADYNE COM 880770102 14,667 -635 -4.15 1,473 -13.51 0.0057
2023-08-11 2023-06-30 13F TERADYNE COM 880770102 15,302 1,078 7.58 1,704 11.38 0.0062
2023-05-12 2023-03-31 13F TERADYNE COM 880770102 14,224 1,292 9.99 1,529 35.43 0.0061
2023-02-10 2022-12-31 13F TERADYNE COM 880770102 12,932 103 0.80 1,130 17.12 0.0049
2022-11-09 2022-09-30 13F TERADYNE COM 880770102 12,829 50 0.39 964 -15.73 0.0044
2022-08-10 2022-06-30 13F TERADYNE COM 880770102 12,779 40 0.31 1,144 -24.04 0.0051
2022-05-13 2022-03-31 13F TERADYNE COM 880770102 12,739 -258 -1.99 1,506 -29.13 0.0053
2022-02-14 2021-12-31 13F TERADYNE COM 880770102 12,997 229 1.79 2,125 52.44 0.0067
2021-11-12 2021-09-30 13F TERADYNE COM 880770102 12,768 79 0.62 1,394 -18.00 0.0047
2021-08-12 2021-06-30 13F TERADYNE COM 880770102 12,689 61 0.48 1,700 10.61 0.0059
2021-05-13 2021-03-31 13F TERADYNE COM 880770102 12,628 -392 -3.01 1,537 -1.54 0.0058
2021-02-09 2020-12-31 13F TERADYNE COM 880770102 13,020 1,871 16.78 1,561 76.19 0.0057
2020-11-06 2020-09-30 13F TERADYNE COM 880770102 11,149 17 0.15 886 -5.84 0.0038
2020-08-12 2020-06-30 13F TERADYNE COM 880770102 11,132 10 0.09 941 56.31 0.0045
2020-05-11 2020-03-31 13F TERADYNE COM 880770102 11,122 -153 -1.36 602 -21.72 0.0038
2020-02-13 2019-12-31 13F TERADYNE COM 880770102 11,275 202 1.82 769 19.97 0.0040
2019-11-12 2019-09-30 13F TERADYNE COM 880770102 11,073 -29,375 -72.62 641 -66.92 0.0037
2019-08-13 2019-06-30 13F TERADYNE COM 880770102 40,448 -19 -0.05 1,938 20.22 0.0111
2019-05-14 2019-03-31 13F TERADYNE COM 880770102 40,467 1,200 3.06 1,612 25.16 0.0098
2019-02-14 2018-12-31 13F TERADYNE COM 880770102 39,267 9,572 32.23 1,288 17.30 0.0094
2018-11-13 2018-09-30 13F TERADYNE COM 880770102 29,695 501 1.72 1,098 -1.17 0.0067
2018-08-13 2018-06-30 13F TERADYNE COM 880770102 29,194 8,029 37.94 1,111 14.89 0.0076
2018-05-15 2018-03-31 13F TERADYNE COM 880770102 21,165 11,144 111.21 967 130.24 0.0068
2018-02-14 2017-12-31 13F TERADYNE COM 880770102 10,021 1,000 11.09 420 25.00 0.0029
2017-11-13 2017-09-30 13F TERADYNE COM 880770102 9,021 -400 -4.25 336 18.73 0.0025
2017-08-04 2017-06-30 13F TERADYNE COM 880770102 9,421 -151 -1.58 283 4.04 0.0021
2017-05-10 2017-03-31 13F TERADYNE COM 880770102 9,572 0 0.00 272 11.93 0.0022
2017-02-14 2016-12-31 13F TERADYNE COM 880770102 9,572 0 0.00 243 17.39 0.0022
2016-11-14 2016-09-30 13F TERADYNE ADR 880770102 9,572 9,572 0.00 207 0.0018
2016-08-08 2016-06-30 13F TERADYNE COM 880770102 0 -11,340 -100.00 0 -100.00
2016-05-16 2016-03-31 13F TERADYNE COM 880770102 11,340 -307 -2.64 244 1.67 0.0023
2016-02-16 2015-12-31 13F TERADYNE COM 880770102 11,647 -500 -4.12 240 10.09 0.0023
2015-11-12 2015-09-30 13F TERADYNE COM 880770102 12,147 -682 -5.32 218 -11.74 0.0019
2015-08-03 2015-06-30 13F TERADYNE COM 880770102 12,829 682 5.61 247 8.33 0.0004
2015-05-11 2015-03-31 13F TERADYNE COM 880770102 12,147 12,147 0.00 228 0.0004
2015-02-05 2014-12-31 13F TERADYNE COM 880770102 0 -11,072 -100.00 0 -100.00
2014-11-04 2014-09-30 13F TERADYNE COM 880770102 11,072 -8 -0.07 214 -1.38 0.0004
2014-08-01 2014-06-30 13F TERADYNE COM 880770102 11,080 -210 -1.86 217 -3.12 0.0004
2014-05-06 2014-03-31 13F TERADYNE COM 880770102 11,290 210 1.90 224 14.87 0.0004
2014-02-11 2013-12-31 13F TERADYNE COM 880770102 11,080 60 0.54 195 7.14 0.0003
2013-11-12 2013-09-30 13F TERADYNE COM 880770102 11,020 -21,992 -66.62 182 -68.57 0.0003
2013-08-07 2013-06-30 13F TERADYNE COM 880770102 33,012 33,012 579 0.0011
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.